Filter-frame for use with pressure-filters



L. J. MARTEL. FILTER FRAME FOR USE WITH PRESSURE FILTERS.

APPLICATION FILED MAR. II, 1920.

Patented Mar. 1, 1921.

. UNITED STATES PATENT OFFICE.-

lLOUIS J. IABTEL, OI NEW ORLEANS LOUISIANA, ASSIGNOR TO MARTEL FILTER COMPANY, INC 01 INFMT ORLEANS,

SIANA.

To all who mit may concern:

Be it' known that I, LOUIS J. MARTEL, a citizen of the United States, residingat New Orleans, parish of Orleans, and State of Louisiana, have invented certain new and useful Im rovement's'in' Filter-Frames for Use with ressure-Filters; and I do hereby declare the following to be a full, clear, and exact description of the inventlon, such. as will enable others skilled in the art to which -it a pertains to'make and use the same.

y present invention relates to improvements in filtering apparatus for use in the filtering of cane juice and other saccharine for purposes of renovation or repair, may

be readily and quickly removed.

The invention also provides an independentl operated filter frame whichmay be use entirely independently of all the other filter frames of the apparatus, and which may be cut out of operation whenever desired.

My invention will be more fully understood after reference to the accompanying drawings, in which like parts are indicated by similar reference symbols throughout the several views, and in which Figure 1 shows one of the complete filter frames with the filter cloth applied, parts being broken away for the sake of clearness in the drawings.

Fig. 2 is an end view of the filter frame shown in Fig. 1 as seen from the right of said figure, the filter cloth being removed.

Fig. 3 shows a section along the line 3-3 of Fig. 1, and looking in the direction of the arrows; an Fig. 4 shows the mode of connecting the filter frame to the slotted header which is used for carrying off the liquid filtered through the frame.

The filter frame A consists of the metallic border strips a, a and a forming the three sides of a rectangle, the other side of .the rectangle bein formed by the loop-shaped 56 metal strap A which has its central portion Specification of Letters Patent.

LOUISIANA, A CORPORATION OF LOUI- FILTER-FRAME FOR USE WITH PRESSURE-FILTERS.

Patented Mar. 1, 1921.

Application filed. March 11, 1920. Serial No. 384,350.

a fitting snugly'over the header 13. The edges a of the strap A are fastened together by means of the rivets a similar to the rivets a used inthe border-pieces a, a and a These rivets are preferably countersunk as shown so as not to engage the filter bags or cloth C when the latter is put on, as Wlll be hereinafterdescribed. Held between the border strips and the strap A as aforesaid are the three layers of woven wire of copper, the central layer A being made of double crimped copper wire of large mesh, preferably about 8 meshes more or less to the inch. This central sheet of heavy double crimped wire serves as a bolster mm to support the two outer layers A and A which are of much finer mesh, and which are also ofcopper. These'latter may be of about 20 meshes to the inch more or less.

The whole frame includes-as a part thereof the suspension tube B which may. be closed at one end as by the screw pin 6, and the other end may be screwhreaded, as at b, and-attached to the union D which otherwise securedfastin the end wall of the filter tank or body G, as 'shownin Fig. 4.=

The tube B is slotted along its bottom to permit the projection thereinto of the central wire sheet or bolster wire A Before the filter frame is inserted in the filter, the filter cloth C is put on. This cloth is preferably in the form of a bag like a pillowcase, having its bottom and ends closed and the top open. The edges 0 of this top are sewed together as at 0', see Fig. 3, after the filter cloth is put in place and before the filter frame is mounted in the tank or body with the other frames therein contained.

The herein described filter frame is adapted for use in any suitable type of filter tank- It will be obvious that variousmodificw' tions in the construction, combination and arrangement of parts might'be made which could be used without departing from the spirit of my invention; and I do not mean to limit the invention to such details except as articularly pointed out in the claims.

aving thus described my invention What I claim and desire to secure by Letters Patent of the United States is 1. A filter frame for use in apparatus of the character described, comprising sheet metal border strips for the bottom and sides thereof, and a sheet metal head plate bent to form a substantially U-shaped strap mounted at the top of said frame, a longitudinall slotted supporting tube mounted in said il-shaped head plate and projecting beyond the ends of said plate, and a series of Woven wire sheets held in 'said borderplates and said head plate, one of said sheets projecting into the longitudinal slot in said coarse mesh Woven wire' faced on oppositesides with sheets .of fine --mesh woven wire, held in-said border plates and in said head plate and registering with the slot in said supporting tube. A

3. In a com ression filter, the combination with a filter rame comprising sheet metal border strips for the bottom and sides thereof, and a sheet metal head plate bent to form a substantially U-shaped strap mounted at the top of said frame, a longitudinally slotted supporting tube mounted in said U-shaped head plate and projecting beyond the ends of said plate, and a series of woven Wire sheets held in said border plates and said, head plate, one of saidsheets projecting into the longitudinalslot in said tube, of a filter bag made of heavy textile fabric inclosing said frame all except the free ends of said supporting tube. 4. In a com ression filter, 'the combination with a filter rame comprising sheet metal border strips forthe bottom and sides thereof, and a sheet metal head plate bent to form a substantially U-shaped strap mounted at the top of said frame, a longitudinally slotted supporting tube mounted in said U- shaped head plate and projecting beyond the ends of said plate, and a central sheet of coarse mesh woven wire faced on opposite sides with sheets of fine mesh woven wire,

.held in said border plates and in said head plate and registering with the slot in said' supporting tube, of a filter ba made of heavy textile fabric inclosing sai frame all except the free ends of said supporting tube. 5. In a compression filter, the combination with a filter frame comprising sheet metal border strips for the bottom and sides thereof, and a sheet metal head plate bent to form a. substantially U-shaped strap mounted at the top of said frame, a longitudinally slotted supporting tube mounted in said U-shaped head plate and projecting beyond the ends of said plate, and a series of woven wire sheets held in said border platesv and said head plate, one of said sheets projecting into the longitudinal slot in said tube, of a filter'bag made of heavy textile fabric inclosing said frame all except the free ends of said supporting tube, a nipple projecting from the end wall of the filter body and a union for detachably connecting the supporting tube to the nipple.

6. In a compression filter, the combination 7 with a filter frame comprising sheet metal border strips for the bottom and sides thereof, and a sheet metal head plate bent to form a substantially U-shaped strap mount-- ed at the top of said frame, a longitudinally slotted supporting tube mounted in said U- shaped head plate and projecting beyond the ends of said plate, and a central sheet of coarse mesh woven wire faced on opposite sides with sheets of fine mesh woven wire,

held in' said border plates and in said head I plate and registering with the slot in said supporting tube, of a filter ba made of heavy textile fabric inclosing. sai frame all,

except the free ends of said supporting tube, a nipple projecting from the end wall of the filter body, and a union for detachably connecting the supporing tube to the ni ple.

LOUIS J. MAR .EL. 

